package com.it;

import com.it.dao.UserDao;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class AppForInstanceUser {
    public static void main(String[] args) {
//        //创建实例工厂对象
//        UserDaoFactory userDaoFactory = new UserDaoFactory();
//        //通过实例工厂对象创建对象
//        UserDao userDao = userDaoFactory.getUserDao();
//        userDao.save();

        // 实例化工厂
//        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
//        UserDao userDao = (UserDao) ctx.getBean("userDao");
//        userDao.save();

        // 测试bean作用范围: 单例/非单例
        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserDao userDao1 = (UserDao) ctx.getBean("userDao");
        UserDao userDao2 = (UserDao) ctx.getBean("userDao");
        System.out.println(userDao1);
        System.out.println(userDao2);
    }
}
